Illuminated spirit-level.



' GLA. MURPHY & M. W. REYNOLDS.

I ILLUMINATED SPIRIT LEVEL.

AIPPLIOATION FILED NOV. 13,1911.

1,043,128. j I Patented Nov. 5, 1912.

snow tow? CHARLES A. MURPHY MA/TK W fifYNOLDS Wad ai/wcw 7 ToaZZ whom itmay. concerns 1- x 3 Be it known that We, CHARLES A; MURPHY and "MARKBarrows, citizensof the United States, residing at Oakland, in the haveinvented certain new' and useful Im provements. in IlluminatedSpint-Levels,

ci-iannns A. Murmur -A'. I \TD mnnx w. nEYN'o ns, 0F oAKLAND,CALIFORNIA.

rrnnmmarnn srmnr mvnn.

- Specification of Letters Patent.

maneam. 5,1912.

- Application-flled meats; 13, 191 1. SerialNo. 639,898;

-. eounty of Alameda andstate of California,

of which the following is a specification.

This invention relates to spirit levels It the type which carpenters useand the principal object of the device is' to "provide an improvedattachment which maybe ap lied by any one skilled inthe art 'to any, 0the. ordinarywooden levels, the purpose of the attachment being toprovide for the illumi'-' nation of the bubble in the' level vialwhether the same be for the lplumb, or for the level pro er.= 1 ,I

With the a eve and other objectfi in View the invention consists ofcertain novel fea-v tures ofconst-ruction arid combinations of parts aswill be hereinafter fully illustrated v in the accompanying drawings,described in the specification and spec the claim.

' In the accompanyingdrawings, like char acters of reference indicatelike parts in-the several views, andzFigure 1 is a side elevation alongthe line 3-1-3, Fig.1. Fig.4 is a section along jthelineA-QA, Fig. 2.Fig, 5 isla section along the line 5+5, Fig. 2. Fig.

' theplate 10 are clips 15 for the reception of 1 Copies of this patentmay be obtained for dis a view in elevation showing theattachfor arecess 11 formed in the level 1 2', the re-. cess having openings 13leading therefrom to points adjacent the vials 14. Secured to 1G.Adjacent this battery there is abattery V a contact member 17 which 1smmounted ifically' set forth in is'claimed as new, is;'

tion of thelevel. Fig. 2 is a fragmentary sectional view showing theilluminating means mounted 1n the level. Fig. 3 isa'sec-I tings solderedto said wires.

siilated fromdthe plate by insulation 18'.- -There is also provided'a-second contact :inember 19. The first of these contact inemhersengages one pole as at 20 ofthe battery while the second member engagesthe other pole-'21:," Mounted jin insulated casings-22' are, pushbuttons 23 of the ordinary type and attached to these push buttonsarethe' ends of Wires 24. From each-pushv button a wire 25fruns .to andis soldered to a lamp 26."

From each lampra'wire 27 extends to one pole of the battery." The otherwires 24 from th'e-push buttons are connected to the 'opposite poles ofthe battery. The lamps are located in the openings 13 so that when theypush buttons are closed by pushing "thereon the circuit will be closedlthrough the, respective lamp according to the button ushed and thebubble-of the level vial'will I etherebyilluminated; v I I a There hasthus been provided a simple and efficient device of the kind describedand for thepur ose specified.

Having t usdesc'ribedithe invention, what An attachment for a levelhavin a recess in its side and openings leading t ierei'tromto "ointsadjacent the level vials, said at tac ment comprising-acover'plate forsaid recess, battery clips carried thereby, battery contacts mounted onthe plate, push buttons mounted on'saidplate, wlres connecting said pushbuttons and contacts, othenwires leadlng from said contacts and pushbuttons,

and lamps adapted to fit within said open- In testimony whereof we aflixour signas tures in' presence of two witnesses.

- cHARLEsA. MURPHY. I MAR-K W. REYNOLDS.

\Vitnesses: i

- F. P. Scnnonnnn, I

W. A. STOCK.

five cents each, by'eddr'essing the Commissioner at Patents,

Washington, D. Q."

